Beau,
It mine. The headers came with the y-pipe and cost 750 $. I bought the 1 3/4", with out the EGR connectors.
The installation was not easy, the holes for the bolts were not nice made, so they had to drilled out. Also the original bolt don't fit anymore, so I had to dammage my tubes. $#*&@^!!
I have no cats and a B&B tri-flow 2,5"exhaust. First I tought I was driving a tank, but the problem was, that a exhaustclamp was turned, so it hit the bottem of my body! Now I love the sound of my vette!
One thing, I have tested my car on the dyno, and under 2000 rpm my vette has a little less fuel, this gives a strange feeling when you drive with headers.
In a few months I will install my new DTA computer system, this will solve the problem.
Good luck with the headers.